Reinforced concrete cross-tie.



PATENTBD JULY 28, 1908.

N0.894,2v53. v

' J. H. BOWDITGH.

`REINFORCED CONCRETE GROSS TIE. APPLICATION FILED SEPT. 30,1907.

I sultab e metallic Aspike boxes by means of.

s ective vlew of one box i l concrete mixture, which may portion of one -and Reinforced Concrete- Cross-Tie, of which the length so that there break in the middle with two'rails thereon having parts broken -away to show the detailsy of construction and of one truss bar, rod

.uNrTED STATES iATENT OFFICE.A

' JonN H. Bow-muren, or New BRIGHTON., NEW YORK.

RErNFoRcED coNcnE'rE cRoss-TIE.

. NCL-894,253, Specification of Lettrs'luatent. I Patented July 28, 190B. p

-- pnlplication filedseptelber so,19o7; serrano.395,193.-V

` form so as to insure erfect contact with all metal surfaces; whic mold or form may be of' the character usually employed in making concrete products.

To all whom it may concern".l v

Be it known that I, JOHN H. BowDIToH, a citizen of the United States, residing-at New Brighton, `on`Staten Island,l in the State of New York, have invented a new and useful form are located, prior to the placing therein of the concrete mixture, two iron angle bars 2 e tending the entire length ofthe form, which bars are provided with suitable rinwardly extending ,spikes or pins 3 having heads counter sunk in the angle bars, by means of which spikes the bars are bonded into the concrete body of the tie. These angle bars serve to protect the lower edges of the tie from being chipped or abraded by the use of track tools or by the tamping of the tie.

The reinforcing frame of the tie `consists of four roughenedor steel bars 4 and the full length of two larger ones upper portion of the tie body and the smaller ones 5 are spaced apart in the lower portion of thetie body, and near the ends of the ties the lower bars are bent upward to a juncture with the upper bars and thence directly outward, and at the point of juncture the upper bars are bent downward. At the point of juncture the two bars on each side are fas-l tened together, as by means of the wire 6 being wrapped around them. The frame following is a specification.

, The-invention 'relates to 'a railroad `crosstlie made of concreteor other cement roduzt reinforced with 'iron 'or ste'el or otlibr ,line tallic-b'arsdrods and wire, 'and provided with which the rail is secured on the tie; and among the objects of the invention are to provi e a concrete cross-tie which will withstand the abrasion or breaking of the lower corners of the tie when in use or when crushed stone or -other ballast is tamped under an'd around it, to provide a tie of substantially uniform'strength throughout its will be no tendency to A on an uneven road-bed or when the tie is improperly tamped, and to provide a suitable` means fordetachably fas'- tening the rail on the tie. These general obpreferably corrugated 5 extending substantially the tie of which bars the illustrated in the drawings herewith forming part of this specification, in which Figure l is a perspective View of the tie Fig.' ,2, a longitudinal section of part of the tie showing one rail fastened thereon and showing thereinforcing truss in side elevation; Fig. 3, a general cross section of the tie; Fig. 4, a detached perspective view of one spike box';'Fig. 5, a vdetached perspective and one key spike,

6, adetached perretaining-rod; and 1g. 7, a fragmentary longitudinal section of the .atie showing details of the rail fastening and Wire. Similar numerals refer to similar parts throughout the drawings.

The'body 'l of the tie is made of a suitable be' in the pro# part cement, two'parts' sand three parts'of clean crushed stone of a not exceeding wires 7, which are arranged to vertically and horizontally connect the longitudinal frame members at spaced intervals throughout their length, and also to provide diagonal truss or tension members in each of the longitudinal spaces between the up er and lower bar on each side of the tie. 'll 'thus formed on each side of the tie an inverted truss adapted to resist upper members and ower members. U

The spike boxes 8 are preferably made of cast iron or steel, and may be formed Vwith the comparatively wide base plate or flanges 9. .The transverse apertures 10 are prefer"-i ably" provided in the body of each box near =the base, in which apertures are located the slightly separated; Fig.

compression 'in the crete envelop and `to prov-idel an enlarged f concrete 1s worked and tamped in the tie mold or In the two lower longitudinal angles of the 4 are spaced apart in the transverse binding rods A11 which extendv work is completed by interweaving the truss Y here is tension in the l bearing to withstand the impact or pounding of a moving load on the rails. The upper faces 12 of thespike boxes are located flush with the upper surfaces of the body of the tie and constitute a metallic bearing for the base 13 of the rail thus ob'viating the use 'of a special tic plat e to protect the tie againstv inward, and the recess 16 in thc inner wall as shown. The rail spike' 18 and the keyV Yforming the shoulder 17 which may bc squ are spike 19 are adapted to bc entered in the box cavitynand to fasten the rail in the tie in the following manner. The rail spike 1S is provided lwith a suitable head 20, the inner lower edge of which is beveled or inclined l to correspond with the inclination of the rail lbase 13. The lug 21 is provided on the inner side of the rail spike which lug is adapted to enterl the recess 16 in the inner wall of the spike box `and forms the shoulder 22 ada ted to engage under the recess-shoulder 17 oi the spike-box. The lower end ofthe s ike-lug 21 is preferably beveled, as at 21 a,wh1ch beveled end is adapted to abut on the similarly beveled face 16l in the bottom of the recess `16. vThe outer side of the rail spike 18 is formed with a straight surface 23 against which the similar straight surface 24 on the inner side of the key spike is ada ted to operate. The outer side 25 of the rey spike is beveled or inclined downward and inward to correspond with the similar inclination of the outer wall of the spike box cavity; and theI head 26 is prefera ly provided on the key spike and extends outward beyond its outer beveled side. The s ike boxes are so located in the tie that the e ges of the base 13 of the rail will register substantially with the inner walls of the spike boxes. The rail spikes are then inserted in the box cavities and pushed inward so that the spike shoulder will engage under the box recess shoulders, which brings the beveled under side of the head in contact with the inclined faces of the rail base. The key spikes are then inserted in the box cavity between the rail' spikes and the outer walls of the cavities and the wedge action of the key spike serves to iirinly clamp the rail base on the spike boxes. And at the saine time the rail spike is rigidly held in .the spike-box by the wedging of its lug 21 between the recess shoulder 17 and bottom 16a of the box.

It is evident thatnumerous spike boxes can be located in various positions on any given tie,`so that switch ties can easily be made to carry and securely hold two or more bars or rails. seating the metallic spike box in the concrete and by sustainin' the wedge action 'of the spikes against Wal s of the boxes there will be no tendency to chip or break the cement body of the tie when the rail is being fastened orwhen it is subjected to a moving oad.

What I claim as my invention/and desire to secure by Letters Patent, is

1. A reinforcing frame for a concrete tie comprising two airs of corrugated bars spaced apart andA ocated one pair above the other, the ends of the lower bars being bent upward and connected with the upper bars, and wires interlaced with the bars to connect them together at spaced intervals and 'to form truss members between each upper and lower bar in the longitudinal spaces thus formed.

2. A reinforcing-frame for a concrete tie comprising twoairs of corrugated bars spaecdapart and ocated one air. above the other, and wires interlaced with the bars to connect the'rntogether at spaced intervals and to form truss members between each upper and lower bar inthe longitudinal spaces thus formed.

3. A spike-box for a concrete tie having a base plate thereon and transverse a ertures with inding rods therein extending. aterally each way from the box. i

4. A spike-box for a concrete tie having transverse apertures with binding rods there' in extending laterally each way from the box.

5. A spike-box for a concrete tie having a cavity therein with one wall inclined and the other wall recessed to form a shoulder above and an inclined bottornpbelow, a rail-spike having one side flat and having an inclinedfaced head on one side, a` lug on the same side of the rail-spike adapted to engage under the recessshou der and having an inclined face the .inclined on'its lower end ada ted to abut against the 4 inclined bottom oft e recess, anda wedgeshaped key-spike adapted-to be entered inthe JOHN H. Bownircn.

Witnesses:

O.. V. DEER, HENRY A. MULLIGAN. 

